Improvement in well-curbing



ffice.

IMPROVEMENT 1n WELL-cousine.

@in Stimuli mimi: trim there Enfers' ntrnt mit mating pnt uf tige time.

TO ALLv WHOM IT MAY Cil'flERI:`

Be it known that I, CHARLES W. PERRY, of' the city and county of Providence, in the State offRhode Island, have invented a new and improved Device or Method of Curbing Wells while in the process of digging and stoning or piping.;` and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in providing a series of cases, as shown in iig. 1 by the letters a 6 e,

' these having different diameters, and larel fitted -to slide one within another, similar to atelescope, the object being to have all of them shut together, more or less in number, dependent on the depth the well is to be sunk, and, 4as the digging of the well proceeds, to lower them down successively, beginning at the largest diameter, until the welly is sunk` to the required depth.

Figure shows a well sunk, with the curbing all let de wn in place, and the operation of stoning is commenced as fast as stones are laid, (or piping may be inserted in place of stoning.) The curbing may be withdrawn by a windlass at the top of the we'll, as fast as the stoning or piping progresses towards the top.'

Figure 2 shows an end view of' the cases, which have a ange formed, both vat their bottom inside andtop outside, to' prevent from dropping through each other. .l I propose to construct these cases of, sheet iron or any other suitable'metal or material.

vThe advantages of my method over the old method are, first,- wells may be started at a smaller diameterat the top, land be` continued at a much' smaller diameterto the bottom, than they can by using old-fashioned wooden curbing, s in each series-of a wooden curbing the diameter is lessened considerably more than in' one length orseries of my improved curbing, the old-style curbing being formed by placing a number of wood planks upright, and are held in their place by inserting a large wood ring. The inside of this wooden ring forms the outside diameterl of the next lower series of planking, thereby decreasing vthe diameter, as the well descends, much faster, in proportion to` the depth, than-by the use of my new curbing. y

, f It will.be obvious that my curbs are `muchmore quickly andeasily put dwn thantheold-s'tyle curbing 'also may be more quickly removed from wells.

It will also be evident that,'byfthe use of my improved curbing, wells may be started at a considerable less diameter at the top than is practicable with old-fashioned curbing, thereby rendering it necessary to remove or excavate much less earth, thus saving much in time and expense of digging wells..

,Itwill `be obvious that the number `of'cases or tubes requiredis dependent o'n the depth of the well` to be made. It will also be evident that the principle of my invention may be carried out by the use of various kinds of metals or materials. ThereforeIdo not claim the use of any'particular number of tubes or cases,

nor any particular size of its parts; neither do I claim exclusively the use of any particular material-:in thein construction; but t What I do. claim, and desire to sccure'by Letters Patent, is as follows: v

I claim, in the constructionoi` wells, the combination and arrangement of a series oftiibes or cases, sliding within each otherca,pable oi' extension and contraction, when applied in the manner and for the purposes specified. g

CHARLES W. PERRY.

Witnesses:V

SYDNEY W. PIERCE, i VoLNnY W'. MAsoN. 

